Improvement in dry gas-meters



PATENTED SEPT. 15 1863'. J. B. FISK. DRY GAS METER.

. =7 FPO STATES PATENT OFF-1012.;

l Specification forming part of Letters.Paten t,No. 39,907, datedSeptember 15,1863, antedated l Y g u l ebrnary13,1863. v 1

To all whom it may concern.

Be it "known that I, JOSEPH Fish, or

Salem, in the county of Essen and [State of Massachusetts, have inventeda; new and use-,

- ful: Improvement in GasMeters; and I do hereby declare that-thefollowing is a fulLelear, and ex'act-descrip;

perati'onof Valves of tion thereof, referencebeing had to theaccompanyingdrawings, forming part of" this specificatimi', in'whi ch-Figure -1-is a vertical longitudinal se'ctionoi' a gas-meter withmyiniprovement applied to" it. Fig.-2'is"'ahorizontal seetion throughthe register-gear cliamberi Fig. 3'is, a plain of the" valve within' thegas-chest andon its-"seat. Figi iis 3/ vertical section ofFigJ3. Fig. 5

Figs. 6;

is an under side view of the valve. and 7'are upper andnnder sideviews'of the seat. Figs- 8, 9, 10, 11, and 12 "are views ofmodifications oi' 'thie'in'vention;,I

figures indicate like parts.

The same letters of rei'erencein'thefseveralf The nature of my inventionconsists "in a gas-meter val've which, while operating over the ports ofits seat, is so controlled'tha-t all of its sides maintain aparallelismwith the sides of the several ports of the seat, and at thesame time every part of th'eworking sur: face of the valve describessmall circles the radii of 'whiclrare equal to the radius of theeccentric or crankwhich produces the motions in the valve, said radiusbeing about equal to the width ofthe ports. Thus every part of theworking surfac'e' of the valve-seat is traversed'and 'wornequally;

It consists, seconthin the combination, with; the' eccentric 'or crank,of the" annular cross and open guides, the same being' one means forcontrolling the eccentric motions offlt he valve. is

It consists, third, in so disposing the g'asports 'o'f the valve-seatthat they .inclose'a. central "discharge-passage, in combination with avalve constructed. with'a rim on its under side, whereby the sedimentwhich collects on the valve-seat is scraped 011' and discharged intothecentral passage, and also the influx and effluxof the gas take place,on opposite sides of-the center of the valve-seat, simultaneously,

To enable others skilled in the art to make, and use my invention, Iwill proceed to'describe its construction and operation.

' directors 1 I I Q Josnmri EIsK ,i "O F SALEM, arfassAoHUIs' 'TT's; j

i i aevemem IN DRY GAS-ME ERS. I

The operation of the diaplira gms ot "the meter which is represented inthe drawings is the same as that of inany meters in usethat is. thegasalternately presses against op posite sides of eachdiaphragm, andwhile the gas is entering 'the space'or chamber on one side of adiaphragm it is passing out of the chamber on the opposite side. A is avalveseat, of hexagon shape, an

' with six gas-ports, a a a u e o through it,- said portsheingarrangcdround a central hexagon shaped" discharge-orifice, b, which terminatesin a rcircle and connects with the outlet B of the gas meter. At ;oneside of the, seat, and 'outsidebf the binding-line of the"working-surfitce thereof, a right-angle inletpassage, 0, is formed,said. passage leading horizont illy and vertically through the seat intoages chest, 1).. This valve-seat 'is'ar ranged "in the center ofthe-partition 'E,'wl .ieh dividesthe diaphragm-chambers F F F? E? FEifr'om the registeringgearing chamber" G, audits ports leading into thediaphriitgim chambers-that is, three by means of curved and three bymeans of 'pipes' J as agon-shaped valve, w m

J, 'pro ecting' from its under'surface, said rim inclosing ahexagon-shaped chamber, J?,'-ofaii area in any direction sutticient toinclose the whole of one port, about two thirds of another, and aboutone-third of another, while one of [the remaining three portsiswholly-open to 'the infiowing gas, anotherabonttwo-thlrds open, andanother about one-third open. The" "width of the rim of the valve issuificientt'to" cover the ports of the seat with a, slight lap,

"The top of the.val\ 'e has an-open guide,K.K, I at twoof its corners,said corners being diametrically opposite one another, andin the center-'ot"the hack of the valve is iormeda circular socket, d, fora crank-pinto set-in D is a gas chesh'ofhexagon shape. and witha permanentlyfitted.- top. At opposite ends,

and from the base of this chest, ears-e 6' pro--' ject horizontally,said ears restingupon exte'n- .sions of the valve-scat, and beingfastened" theretohy means of screws f f; Fromopposite ends of the chest,on the inside, and wright angles to the guides K K,-other open guides,

M M, project a short distance,and from the center of the top of thechest a vertical stuff ing-box, N, extends'np'ward, saidstulfing-boxleading out of the'gas-chmnber oi the chest.

In the guides K K and M M a cross, 0, is fitted loosely, the arms ofsaid cross terminating in a central ring, and being shorter than theguides. Down through the stuffing box and the ring ofv the cross ashaft, P, with a crank or eccentric, h, at its lower end, and acrank, g,at its upper end, extends,- the pin 01 of the eccentrich entering thesocketd in the center of the back of the valve, and the pin j of thecrank g passing through the iuner'ends of the connecting-arms Q Q Q ofthe diaphragr'ns.

Fro'm't'he foregoing description itwill be evident that it the valveoccupies the position shown in Figs. 1 and 3 the gas will, when let on,flow into the gaschest through the passage O, and therefrom through theports a a a pass into three of the diaphragm-chambers that is, to thefull capacity of the port a, about two-thirds the capacity of the. porta, and about one-third the capacity of the port 'a'i-and thus, throughthe motion imparted to the diaphragms and the intermediate.connecti'pns, set the valve in operation. The valve, bemy; set in motionin the direction of the arrow 1 is caused to perform ,by the'crank oreccentric,

- aneccentrie movement over the ports of the. seat, and in making itsmovements every part of rim ineloses a chamber in the valvev and thedischarge-orifice of the .seat, every part of the working-surface ot thevalve and seat will, while of necessity nearingequally, be

- kept clean of sediment, &c.,.the sedimentary deposits being swept bythe motions of the valve into the discharge-orifice of the seat.- ln themotions of the valye, it is prevented from turning out of properrelation to the ports by '.-means of the cross 0 and the guides K Kand,-

M M, and the ports a a a a 01, a are successively openedfully to theinflowing gas; but when the port a is fully open to the inflowinggas-.and introducing the gas into the outer diaphragm-chamber F the porta is fully open tothe outflowing. gas of the inner diaphragmchamber Fand when port a is open to. the inflowing gas and introducing the sameinto the-inner diaphragm-chambers F port a is opento. the outflowing gasof the outer diaphragm-chamber F and when port a is open to theinflowing gas and introducing gas int) the outer diaphragm-chamber Fport a is open to the outflowing gas of one of the innerdiaphragm-chambers F and vice .vcrs I, as

respects the entrance and exit of the gas to and. from thediaphragm-chambers when the ports a a. a are fully open to theinflowinggas. The gas, of course, in discharging from the diaphragm-chambercirculates in the .In Figs. 8 and 9 means differing from the cross 0 andguides -K M are shown for keeping the sides of thevalve parallel to thesides of the seat while its surface is performing an eccentric movementover the ports of the seat and every part of its working-surfacedescribing small circles. In this modification it will besee'n that theseat of the valve is square and the gas-ports difl'eren'tly disposedfrom what they are in Figs. 6 and 7 also, that the valve is moved fromits under side by means of aneccentric, the crank-rod of which is toextend down through acent'ral tube of a gasmeter and connect wi th diaphragms in a proper manner by means of its lower eccentric or crank. Themotions of'the valve transversely and longitudinally are maintained bymeans of a T-shaped'guide-rod, R S, which Islides longitudinally withthe valve, while the valve slides transversely on it.

In Figs. 10 and 11 means differing from both the cross and the T-shapedbar are shown for maintaining the parallelism of the sides of the valvewith the'sides of the ports while every part of its working-surface isdescribing small circles. It will be observed that the disposition ofthe ports of the seat is different from that of either of the otherplans referred to, but thatthe eccentric is applied in the same manneras in Figs. 8 and 9. There is provided to maintain the specified motionsof the valve a sliding yoke, U, which fits around a central hub, u, onthe under side of the valve, and presenting two stops, '0 c, which playin longitudinal slots of'the valve-seat as the I valve performs itsmovements.

1 have shown and described several forms and constructions of valves andseats and modes of arranging the same; but, under the first clause of myclaim, 'I do not limit myself .to any particular form or construction ormode of arranging the valve and seats, nor to any particular means forproducing the motions of the valve, but intend to 'cover, broadly, thecombination of the motions, in. a gas-valve, which are specified in thefirst clause of the statement of the nature of thejuvention.

What I claim as my invention, and desire to secure by Letters Patent,is-q 1. The combination of a rotary crank or ec centric and guides andstops K K M M O,

